TODAY IN OUR LAB: Corynebacterium kefirresidentii

Corynebacterium kefirresidentii

Corynebacterium kefirresidentii is a novel species of Gram-positive, catalase-positive, non-spore-forming, non-motile, rod-shaped bacteria that was isolated from kefir grains collected in Germany. Its draft genome sequence was found to be remarkably dissimilar to those of other Corynebacterium species, confirming its uniqueness. The genus Corynebacterium, to which C. kefirresidentii belongs, is known for containing species such as Corynebacterium diphtheriae and other nondiphtherial corynebacteria. Corynebacterium species are commonly found on human skin and mucous membranes. However, specific information about Corynebacterium kefirresidentii is limited due to its recent discovery.

Corynebacterium kefirresidentii is a quirky little bacterium that enjoys chilling out in kefir grains, a complex mix of bacteria and yeasts responsible for fermenting milk into the tangy beverage we know as kefir. While its roommates, like Lactobacillus and Lactococcus, are busy turning milk into a tasty treat, C. kefirresidentii remains a bit of an enigma, keeping its role in the fermentation process under wraps.

This mysterious microbe has a unique genome sequence that sets it apart from its Corynebacterium relatives, making it the cool, unconventional cousin in the family. Interestingly, C. kefirresidentii seems to have a penchant for showing up during atopic dermatitis flares, increasing in relative abundance. It’s like that friend who always seems to appear when you’re having a rough day.

In summary, Corynebacterium kefirresidentii is a peculiar bacterium that loves hanging out in kefir grains, keeping its role in the fermentation process a secret, and making surprise appearances during atopic dermatitis flares.